3Granovetter M. The Strength of Weak Ties[J].American Journal of Sociology,1973,(06):1360-1380.
4Guiso L,Sapienza P,Zingales L. The Role of Social Capital in Financial Development[J].American Economic Review,2004,(03):526-556.
5Garretesn,H,Lersink,R,Setrken,E. Growth,Financial Development,Social Norms and Legal Institutions"[J].Journal of International Financial Markets,Institutions & Money,2004,(14):165-183.doi:10.1586/ern.10.41.
6Matin,I,Hulme,D,Rutherford,S. Finance for the Poor:From Microcredit to Microfinancial Services[J].Journal of International Development,2002,(14):273-294.